1. Improve the regular expression. 2. Use 'startsWith' instead of 'indexOf() === 0'. 3. Use 'Console.jsm' for logging. 4. Add 'trim()' to remove white space and '\u200e', which can be found in Google's search results page.
1. Improve the regular expression.
2. Use 'startsWith' instead of 'indexOf() === 0'.
3. Use 'Console.jsm' for logging.
4. Add 'trim()' to remove white space and '\u200e', which can be found in Google's search results page.

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